Keira Knightley Sings in Begin Again Music Video — Hear Her Voice! (VIDEO)

Adam Levine may be the one with The Voice, but his Begin Again co-star Keira Knightley ain't so bad either!

The Brit beauty sings in a new music video from the new movie, crooning a delicate tune called "Lost Stars"

The film's official website describes it as a "soul-stirring comedy about what happens when lost souls meet and make beautiful music together. Gretta (Keira Knightley) and her long-time boyfriend Dave (Adam Levine) are college sweethearts and songwriting partners who decamp for New York when he lands a deal with a major label. But the trappings of his newfound fame soon tempt Dave to stray, and a reeling, lovelorn Gretta is left on her own. Her world takes a turn for the better when Dan (Mark Ruffalo), a disgraced record-label exec, stumbles upon her performing on an East Village stage and is immediately captivated by her raw talent. From this chance encounter emerges an enchanting portrait of a mutually transformative collaboration, set to the soundtrack of a summer in New York City."